84 lines
2.3 KiB
Python
84 lines
2.3 KiB
Python
from pathlib import Path
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import shutil
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import subprocess
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import imageio_ffmpeg
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TARGET_SAMPLE_RATE = 22050
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SUPPORTED_AUDIO_EXTENSIONS = {".wav", ".mp3", ".m4a", ".ogg", ".flac", ".webm", ".aac"}
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def configure_ffmpeg():
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"""
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Mengambil path ffmpeg dari imageio-ffmpeg.
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Jika ffmpeg gagal tersedia, error dibuat lebih mudah dipahami.
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"""
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try:
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return imageio_ffmpeg.get_ffmpeg_exe()
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except Exception as error:
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raise RuntimeError(
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"ffmpeg belum tersedia. Jalankan `pip install imageio-ffmpeg` "
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"atau install ffmpeg di sistem operasi."
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) from error
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def convert_to_wav(input_path, output_path):
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"""
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Mengubah WAV, MP3, M4A, OGG, FLAC, WEBM, atau AAC menjadi WAV.
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Output selalu:
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- WAV
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- mono
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- sample rate 22050 Hz
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"""
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input_path = Path(input_path)
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output_path = Path(output_path)
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extension = input_path.suffix.lower()
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if not input_path.exists():
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raise FileNotFoundError(f"File audio tidak ditemukan: {input_path}")
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if extension not in SUPPORTED_AUDIO_EXTENSIONS:
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allowed = ", ".join(sorted(SUPPORTED_AUDIO_EXTENSIONS))
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raise ValueError(f"Format audio tidak didukung: {extension}. Format yang didukung: {allowed}")
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output_path.parent.mkdir(parents=True, exist_ok=True)
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if extension == ".wav":
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if input_path.resolve() != output_path.resolve():
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shutil.copyfile(input_path, output_path)
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return output_path
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command = [
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configure_ffmpeg(),
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"-y",
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"-i",
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str(input_path),
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"-vn",
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"-ac",
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"1",
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"-ar",
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str(TARGET_SAMPLE_RATE),
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"-f",
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"wav",
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str(output_path),
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]
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try:
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result = subprocess.run(command, capture_output=True, text=True, check=False)
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except FileNotFoundError as error:
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raise RuntimeError(
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"ffmpeg tidak bisa dijalankan. Pastikan dependency `imageio-ffmpeg` "
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"sudah terpasang atau install ffmpeg secara manual."
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) from error
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if result.returncode != 0:
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error_message = result.stderr.strip() or "Tidak ada detail error dari ffmpeg."
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raise RuntimeError(f"Konversi audio gagal: {error_message}")
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if not output_path.exists():
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raise RuntimeError("Konversi audio gagal: file WAV output tidak terbentuk.")
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return output_path
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